扦插广泛用于苗木繁殖,但多数种苗不易生根,或生根需时较长,效果也并不稳定,管理十分烦琐。提高扦插繁殖效率所必须的外源性条件主要取决于下述三因素,并使之达到合理配合:1.持续维持插穗保留叶片的湿度;2.保持基质合理的湿度,形成气、湿优良配合状况。3.供给适当的底温。基质温度的提高会带来根系发育的改善。七十年代末,由于“电子叶间歇喷雾装置”的出现,产生了用薄膜水连续覆盖叶片的扦插繁殖新技 Cutting is widely used for seedling reproduction, but most of the seedlings are not easy to root, or take a longer rooting, the effect is not stable, management is cumbersome. Exogenous conditions necessary to improve the efficiency of cutting propagation mainly depends on the following three factors, and to achieve a reasonable match: 1. Continued to maintain cuttings to maintain leaf humidity; 2. To maintain a reasonable matrix humidity, the formation of gas, wet with good coordination situation. 3 supply the appropriate bottom temperature. The increase of matrix temperature will lead to the improvement of root development. The late seventies, due to the “electronic leaf intermittent spray device,” the emergence of a continuous film covered with water film cutting propagation of new technologies